Merge branch 'iss_237' into develop
Improvements to the performance of SCF.member and SCF.not_member

1. Reduce the number of ESat.Undefined cases for PropIntMemberSet.isEntailed.
2. PropNotMemberSetInt's constructor specifies to react on fine events yet it did not implement an incremental propagation.
3. Set to passive when PropNotMemberSetInt or PropNotMemberIntSet can guarantee that the domain of the integer variable does not overlap with the envelope of the set variable.
Merge pull request #252 from JLiangWaterloo/set-membership-perf

Improvements to the performance of SCF.member and SCF.not_member
Merge branch 'develop' of https://github.com/chocoteam/Choco3 into develop
Imporve release process
Fix #246
Issue #248: update pom.xml to fit the requirements http://central.sonatype.org/pages/requirements.html
Issue #248: move classes to org.chocosolver (BUT no package or import renaming!! -> DOES NOT COMPILE)
Issue #248: move classes to org.chocosolver (BUT no package or import renaming!! -> DOES NOT COMPILE)
Issue #248: change import and package (only in *.java) NOW COMPILE
Issue #248: add script
Issue #248: update non java files
Issue #248: update release script to deploy on sonatype
Issue #248: update plugins version in pom.xml
Issue #248: update travis
Issue #248: update travis
Issue #248: update jgrapht in pom.xml
Issue #248: update choco-solver/pom.xml
Issue #248: change verbosity level in tests for travis
Issue #248: change verbosity level in tests for travis